RT info:eu-repo/semantics/article
T1 Uncaria tomentosa-loaded chitosan oligomers–hydroxyapatite–carbon nitride nanocarriers for postharvest fruit protection
A1 Santiago Aliste, Alberto
A1 Sánchez Hernández, Eva
A1 Buzón Durán, Laura
A1 Marcos Robles, José Luis
A1 Martín Gil, Jesús
A1 Martín Ramos, Pablo
K1 Agronomy
K1 Biomaterials
K1 Polymers
K1 Polímeros
K1 Nanotechnology
K1 Nanotecnología
K1 Chitosan
K1 Microencapsulation
K1 Food - Packaging
K1 Alimentos - Envasado
K1 Fungicides
K1 Fruit - Postharvest diseases and injuries
K1 Frutas - Enfermedades y plagas
K1 Sustainable agriculture
K1 Agricultura sostenible
K1 Plants, Protection of
K1 Cat’s claw
K1 Garra de gato
K1 3103 Agronomía
K1 3102 Ingeniería Agrícola
K1 3101.05 Fungicidas
AB Given the risks associated with synthetic fungicides, it is crucial to explore safe and sustainable alternatives. One potential solution is using bioactive natural products (BNPs). However, BNPs face challenges like lability, solubility, and lack of specificity. These issues can be addressed through nanoencapsulation. This study focuses on the evaluation of novel chitosan oligomers–hydroxyapatite–carbon nitride (COS–HAp–g-C3N4) nanocarriers (NCs) for encapsulating BNPs, specifically an extract from Uncaria tomentosa bark. The NCs were characterized by transmission electron microscopy, energy-dispersive X-ray spectroscopy, and infrared spectroscopy. The NCs were monodisperse, with a mean diameter of 250 nm, and showed an encapsulation efficiency of 82%. The suitability of the loaded NCs (COS–HAp–g-C3N4–BNP, in a 2:1:0.5:1 weight ratio) for postharvest fruit protection was investigated in vitro and ex situ at a laboratory scale. Results regarding their efficacy against Botrytis cinerea on strawberries, Colletotrichum gloeosporioides on mangoes, Penicillium expansum on apples, Monilinia laxa on peaches, and Sclerotinia sclerotiorum on kiwifruit are presented. Minimum inhibitory concentrations of 250, 375, 375, 250, and 187.5 μg·mL−1 were found in vitro, respectively, while higher doses (500, 750, 750, 250, and 375 μg·mL−1, respectively) were needed to achieve effective control in postharvest tests on artificially inoculated fruit. These findings suggest that NCs containing extracts from U. tomentosa bark show promise as biorational agents and as alternatives to conventional fungicides for managing postharvest phytopathogens.
PB MDPI
SN 2073-4395
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/66619
UL https://uvadoc.uva.es/handle/10324/66619
LA eng
NO Agronomy, 2023, Vol. 13, Nº. 9, 2189
NO Producción Científica
DS UVaDOC
RD 13-may-2024